CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
OPERATING ACTIVITIES
Net loss	$ (140,000,000)	$ (8,303,000,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	2,198,000,000	2,234,000,000
Net loss on sale of business	17,000,000	112,000,000
Goodwill impairment	0	8,793,000,000
Deferred income taxes	(6,000,000)	38,000,000
Provision for uncollectible accounts	54,000,000	77,000,000
Net gain on early retirement of debt	(277,000,000)	(618,000,000)
Debt modification costs and related fees	(80,000,000)	0
Gain on sale of investment	(205,000,000)	0
Unrealized loss on investments	10,000,000	96,000,000
Stock-based compensation	21,000,000	39,000,000
Changes in current assets and liabilities:
Accounts receivable	39,000,000	3,000,000
Accounts payable	(212,000,000)	(147,000,000)
Accrued income and other taxes	440,000,000	(996,000,000)
Other current assets and liabilities, net	264,000,000	(196,000,000)
Retirement benefits	(185,000,000)	(9,000,000)
Change in deferred revenue	1,572,000,000	161,000,000
Changes in other noncurrent assets and liabilities, net	185,000,000	33,000,000
Other, net	(50,000,000)	59,000,000
Net cash provided by operating activities	3,645,000,000	1,376,000,000
INVESTING ACTIVITIES
Capital expenditures	(2,316,000,000)	(2,279,000,000)
Proceeds from sale of business	15,000,000	3,000,000
Proceeds from sale of property, plant and equipment, and other assets	283,000,000	35,000,000
Other, net	19,000,000	9,000,000
Net cash used in investing activities	(1,999,000,000)	(2,232,000,000)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	1,325,000,000	0
Payments of long-term debt	(2,069,000,000)	(145,000,000)
Net (payments) proceeds on revolving line of credit	(200,000,000)	75,000,000
Dividends paid	(3,000,000)	(10,000,000)
Debt issuance and extinguishment costs and related fees	(282,000,000)	(14,000,000)
Other, net	(12,000,000)	(7,000,000)
Net cash used in financing activities	(1,241,000,000)	(101,000,000)
Net increase (decrease) in cash, cash equivalents and restricted cash	405,000,000	(957,000,000)
Cash, cash equivalents and restricted cash at beginning of period	2,248,000,000	1,307,000,000
Cash, cash equivalents and restricted cash at end of period	2,653,000,000	350,000,000
Supplemental cash flow information:
Income taxes refunded (paid), net	425,000,000	(1,289,000,000)
Interest paid (net of capitalized interest of $130 and $75)	(877,000,000)	(886,000,000)
Supplemental noncash information regarding financing activities:
Cancellation of senior unsecured notes as part of exchange offers (Note 5)	0	(1,554,000,000)
Issuance of senior secured notes as part of exchange offers (Note 5)	0	924,000,000
Cash, cash equivalents and restricted cash:
Cash and cash equivalents	2,640,000,000	311,000,000
Cash and cash equivalents and restricted cash included in Assets held for sale	0	28,000,000
Restricted cash included in Other current assets	2,000,000	0
Restricted cash included in Other, net noncurrent assets	11,000,000	11,000,000
Total	$ 2,653,000,000	$ 350,000,000